Yaroslavl Engine Plant YMZ-536 Operation Manual page 139

In course of operation, tension of the generator and other
auxiliaries' drive belts is adjusted automatically, no need of extra
adjustments.
To remove the belt from the generator, compress the spring of
the automatic belt tensioning system.
To remove the belt from other driven units, press the spring of
the automatic belt tensioning system.
To install the belt, act in reverse order.
When conducting scheduled maintenance, prevent oil, fuel,
coolant or paint contact with the belts.
Untimely maintenance of the air filter worsens the process of
air filtering and results in dust entering the engine, which leads to
wear and early failure of the cylinder and piston assembly. Trouble-
free engine operation is ensured by regular maintenance of the air
filter, as well as by constant attention to the status of its components,
especially the sealing gaskets, and proper installation of the air filter.
The filtering element should be replaced when the air filter
clogging indicator is on, or annually. New filtering elements must not
be deformed or damaged.
During operation control the functioning of the air filter
clogging indicator each time the oil is changed. For this, close the
filter inlet when the engine is running at crankshaft speed of 1500
rpm. The indicator should respond.
ATTENTION! WHEN THE ENGINE IS RUNNING, COVERING THE
AIR FILTER INLET WITH YOUR HAND OR A SOFT MATERIAL
(TEXTILE, CLOTH, ETC.) TO PREVENT ITS CLOGGING IS
DANGEROUS AND STRICLY FORBIDDEN.
AUXILIARY UNITS DRIVE
MAINTENANCE
AIR FILTERING SYSTEM
MAINTENANCE
139